[clang] [AST] Assert that FoldingSetNodeID used for hint is correct upon insertion (PR #157692)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

> Sensible? Or presumably we can have an always-inline function wrapper for that, and the inliner will just take care of it.

Yeah, I think the inline helper is cleaner, we can just discard ID before calling anything not inline.

https://github.com/llvm/llvm-project/pull/157692